On Zyras Sensu Strictu in the East Palaearctic and Oriental
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©www.senckenberg.de/; download www.contributions-to-entomology.org/ 67 (2): 213 – 246 2017 © 2017 The AuthorsAuthors On Zyras sensu strictu in the East Palaearctic and Oriental regions III, with a focus on the Southeast of Continental Asia and the Sunda Islands (Coleoptera: Staphylinidae: Aleocharinae: Lomechusini) With 102 figures, 1 key and 1 table Volker Assing 1 1 Gabelsbergerstraße 2, 30163 Hannover, Germany. – [email protected] Published on 2017–12–08 DOI: 10.21248/contrib.entomol.67.2.213-246 Abstract Species of the nominal subgenus of the lomechusine genus Zyras Stephens, 1835 of the southeastern Oriental region are revised. Eighteen species are (re-)described and/or illustrated, six of them for the first time: Zyras (Zyras) latibasalis spec. nov. (Java, tentatively recorded also from Laos), Z. (Z.) rutrilobatus spec. nov. (Laos), Z. (Z.) parvilobatus spec. nov. (Laos), Z. (Z.) hirtiventris spec. nov. (Laos, Vietnam), Z. (Z.) hlavaci spec. nov. (Malaysia: Pahang, Selangor), Z. (Z.) lunatus spec. nov. (Malaysia: Selangor). Eight synonymies are proposed: Zyras bryanti Cameron, 1943 = Z. mortuorum Pace, 1990, syn. nov., = Z. paederinus Pace, 2008, syn. nov.; Zyras nigerrimus Cameron, 1943 = Z. bartolozzii Pace, 2003, syn. nov., = Z. alboterminalis Pace, 2008, syn. nov.; Z. granulipennis Cameron, 1930 = Z. pervariolosus Pace, 2008, syn. nov.; Z. matangensis Cameron, 1943 = Z. daiaccorum Pace, 2008, syn. nov.; Z. montanus (Bernhauer, 1915) = Z. variolatus Pace, 2003, syn. nov.; Z. preangeranus Cameron, 1939 = Z. quadriterminalis Pace, 2008, syn. nov. One species is excluded from Zyras: Myrmedonota modiglianii (Cameron, 1925), comb. nov. Lectotypes are designated for Zyras elegantulus Cameron, 1939, Z. semirufus Cameron, 1939, and Z. flavus Cameron, 1939. Additional records of nine named species are reported. A key to the species recorded from the southeastern Oriental region and an updated catalogue of the species of the Palaearctic and Oriental regions are provided. The subgenus is currently represented in the Palaearctic and Oriental regions by a total of 122 described species. Twenty-two species have been recorded from Sunda Islands. The countries with the greatest diversity are China (46 named species), India (20), Indonesia (19), Malaysia (15), Thailand (14), Nepal (12), Laos (11), and Vietnam (8). Nomenclatural acts Zyras (Zyras) latibasalis spec. nov. – urn:lsid:zoobank.org:act:35276B1A-6492-4F55-8836-91058719625C Z. (Z.) rutrilobatus spec. nov. – urn:lsid:zoobank.org:act:67BAD12F-50BC-4983-A8BC-363FA67F01F1 Z. (Z.) parvilobatus spec. nov. – urn:lsid:zoobank.org:act:6DBB36A1-C12B-4FA1-B28E-55560D6645C6 Z. (Z.) hirtiventris spec. nov. – urn:lsid:zoobank.org:act:73489C67-FB52-4B48-A2E1-BA1F1E55F45D Z. (Z.) hlavaci spec. nov. – urn:lsid:zoobank.org:act:F5734436-CE49-4064-8A52-BC7DF9A0EE67 Z. (Z.) lunatus spec. nov. – urn:lsid:zoobank.org:act:ACD6BAAB-FE21-415D-903F-1D2CDEFE0607 ISSN 0005-805X 213 ©www.senckenberg.de/; download www.contributions-to-entomology.org/ Assing, V.: On Zyras sensu strictu in the East Palaearctic and Oriental regions III Key words Coleoptera, Staphylinidae, Aleocharinae, Lomechusini, Oriental region, taxonomy, new species, new synonymies, new combination, lectotype designations, key to species, catalogue, additional records. Zusammenfassung Arten der Untergattung Zyras Stephens, 1835 der südöstlichen Orientalis werden revidiert. Achtzehn Arten werden beschrieben und/oder abgebildet, davon sechs neu: Zyras (Zyras) latibasalis spec. nov. (Java, wahrscheinlich auch Laos), Z. (Z.) rutrilobatus spec. nov. (Laos), Z. (Z.) parvilobatus spec. nov. (Laos), Z. (Z.) hirtiventris spec. nov. (Laos, Vietnam), Z. (Z.) hlavaci spec. nov. (Malaysia: Pahang, Selangor), Z. (Z.) lunatus spec. nov. (Malaysia: Selangor). Acht Namen werden synonymisiert: Zyras bryanti Cameron, 1943 = Z. mortuorum Pace, 1990, syn. nov., = Z. paederinus Pace, 2008, syn. nov.; Zyras nigerrimus Cameron, 1943 = Z. bartolozzii Pace, 2003, syn. nov., = Z. alboterminalis Pace, 2008, syn. nov.; Z. granulipennis Cameron, 1930 = Z. pervariolosus Pace, 2008, syn. nov.; Z. matangensis Cameron, 1943 = Z. daiaccorum Pace, 2008, syn. nov.; Z. montanus (Bernhauer, 1915) = Z. variolatus Pace, 2003, syn. nov.; Z. preangeranus Cameron, 1939 = Z. quadriterminalis Pace, 2008, syn. nov. Eine Art wird aus der Gattung Zyras enfernt: Myrmedonota modiglianii (Cameron, 1925), comb. nov. Für Zyras elegantulus Cameron, 1939, Z. semirufus Cameron, 1939 und Z. flavus Cameron, 1939 werden Lektotypen designiert. Weitere Nachweise von neun Arten werden gemeldet. Eine Bestimmungstabelle der Arten der südöstlichen Orientalis und ein aktualisierter Katalog der beschriebenen Arten der Paläarktis und der Orientalis werden erstellt. Zyras sensu strictu ist in der Paläarktis und der Orientalis derzeit mit insbesamt 122 beschriebenen Arten vertreten, von denen 22 auf den Sunda-Inseln nachgewiesen wurden. Die Länder mit der höchsten Diversität sind China (46 beschriebene Arten), Indien (20), Indonesia (19), Malaysia (15), Thailand (14), Nepal (12), Laos (11) und Vietnam (8). 1 Introduction According to recent revisions (Assing 2016a, 2017), the BMNH The Natural History Museum, London nominal subgenus of Zyras Stephens, 1833 was repre- (M. Barclay, R. Booth) sented in the Palaearctic and Oriental regions sensu MHNG Muséum d’Histoire Naturelle, Genève Schülke & Smetana (2015) by 124 named and several (G. Cuccodoro) unnamed species. However, a significant number of MNHNP Muséum National d’Histoire Naturelle, Paris species, particularly species described from the Sunda (A. Taghavian) Islands, had not been revised. In view of the consider- MZMB Moravské Zemské Muzeum Brno (via able number of previously discovered new species and M. Schülke) new synonymies, significant taxonomic changes were to MZUF Museo di Zoologia, Università di Firenze be expected. (L. Bartolozzi) The present study focuses on previously unrevised species NMP National Museum of Natural History, Praha described from Peninsular Malaysia, Java, Sumatra, (J. Hájek) Borneo, and the Philippines, as well as additional mate- cAss author´s private collection rial from southeastern Continental Asia and the Sunda cHla private collection Peter Hlaváč, Prague Islands. A revision of this material yielded six new species, cMar private collection Munetoshi Maruyama, eight new synonymies (one of them only changing syno- Fukuoka nymic status), and a new combination. In the course of the present study it was discovered that The morphological studies were conducted using a the illustrations of the aedeagus of Z. maculicollis Assing, Stemi SV 11 microscope (Zeiss Ger many) and a Jenalab 2016 and Z. notaticornis Pace, 1998 in Assing (2016a) compound microscope (Carl Zeiss Jena). The images are confused: figures 221–222 refer to Z. notaticornis and were created using a photographing device constructed figures 225–226 to Z. maculicollis. by Arved Lompe (Nienburg) and CombineZ software, as well as a digital camera (Nikon Coolpix 995). Body length was measured from the anterior margin of the labrum to the abdominal apex, the length of the 2 Material and methods forebody from the anterior margin of the labrum to the posterior margin of the elytra, head length from the ante- The material treated in this study is deposited in the rior margin of the clypeus (without ante-clypeus) to the following collections: posterior constriction of the head, elytral length at the suture from the apex of the scutellum to the posterior 214 ©www.senckenberg.de/; download www.contributions-to-entomology.org/ CONTRIBUTIONS TO ENTOMOLOGY : BEITRÄGE ZUR ENTOMOLOGIE — 67 (2) 213–246 margin of the elytra, and the length of the aedeagus from are known to be suitable only for a minority of species. the apex of the ventral process to the base of the aedeagal Finally, numerous species are represented only by single or capsule. The “parameral” side (i.e., the side where the very few specimens. In consequence, it can be concluded sperm duct enters) is referred to as the ventral, the oppo- that the true diversity of Zyras sensu strictu in these site side as the dorsal aspect. regions is significantly greater than currently known and numerous additional species remain to be discovered and described. At present, the regions with the greatest diver- 3 Results sity of Zyras sensu strictu are China (46 named species), India (20), Indonesia (19), Malaysia (15), Thailand (14), 3.1 General remarks Nepal (12), Laos (11), and Vietnam (8). In all, 22 species have been recorded from the Sunda The present study yielded six species new to science, Islands. Nine of these species – including Z. latibasalis, three from Laos (one of them recorded also from Viet- whose record from Laos is only tentative – are known nam), two from Peninsular Malaysia, and one from Java also from the South Asian mainland. The remainder has (tentatively recorded also from Laos). Moreover, based been recorded only from Borneo (five species), Sulawesi on a revision of type material, one species previously (four), Java (three), and Bali (one). assigned to Zyras sensu strictu is moved to Myrmedonota Interpretation and identification of Zyras sensu strictu Cameron, 1920. Finally, eight new synonymies were species are often difficult, mainly as a result of sometimes discoved, most of them affecting species distributed in remarkable intraspecific variation (particularly so in the Sunda Islands and in Peninsular Malaysia. widespread species) combined with generally little inter- Thus, with practically